Julia M. Comerford et al 2017 ApJ 849 102
The nucleus of the z = 0.06 galaxy SDSS J1354+1327 is observed to turn off and on, possibly the result of discrete accretion events that could have been triggered by a past interaction with a companion galaxy.
J. M. Miller et al 2017 ApJL 850 L3
Chandra imaging of the black hole at the center of the Perseus cluster suggests an emission region consistent with an extended molecular torus or disk, potentially available to fuel the black hole.
Jun Takahashi et al 2017 AJ 154 213
Spectropolarimetry of the eclipsed Moon — through which we can observe Earth as if it were a transiting exoplanet — shows polarization that may be from multiple scatterings as sunlight first passes through Earth’s atmosphere.
V. Ashley Villar et al 2017 ApJ 849 70
Are voids in the duration–luminosity phase space of observed optical transients real, or are we just missing these objects? Few physical models lead to optical transients that occupy voids.
A. U. Abeysekara et al 2017 ApJS 233 7
Gamma-ray emission at >100 GeV was discovered from the blazar RGB J2243+203 with the VERITAS Cherenkov telescope array, allowing for upper limits of z < 0.9 to z < 1.1 to be set on its redshift.
Yusuke Aso et al 2017 ApJL 850 L2
ALMA observations have revealed an extremely young, cold, and faint protostar — which may be a transitional object right after the second collapse of its first core — in the Serpens Main cluster.